CN111004012A - Sintering method brick making process for building waste slurry - Google Patents
Sintering method brick making process for building waste slurry Download PDFInfo
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- CN111004012A CN111004012A CN201911189380.7A CN201911189380A CN111004012A CN 111004012 A CN111004012 A CN 111004012A CN 201911189380 A CN201911189380 A CN 201911189380A CN 111004012 A CN111004012 A CN 111004012A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/1321—Waste slurries, e.g. harbour sludge, industrial muds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/123—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using belt or band filters
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/148—Combined use of inorganic and organic substances, being added in the same treatment step
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/32—Burning methods
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Abstract
The embodiment of the invention discloses a sintering method brick making process of building waste slurry, which comprises the following steps: coarsely filtering the collected building slurry, and discharging the building slurry into a sedimentation tank; after the waste mud is precipitated, removing supernatant and floaters; carrying out sand separation and washing treatment on the residual slurry, and discharging the residual slurry into a flocculation tank; adding flocculant, stirring quickly, standing, and removing supernatant; dehydrating the flocculated slurry to obtain a dehydrated mud cake with the water content of less than or equal to 35%; then adding water into 60-70% of the dehydrated mud cakes, 15-25% of the coal gangue and 10-20% of the rock shale for stirring; sending the uniformly stirred ingredients to an aging tank for aging; crushing and weighing the ingredients, and then conveying the ingredients to a brick making machine for culture; and baking the obtained brick in a baking cellar to obtain a finished brick. The brick making process of the building waste mud can reduce the treatment cost of the waste mud, solve the problem of environmental pollution caused by the waste mud, and reuse the waste mud to reproduce economic value.
Description
Technical Field
The embodiment of the invention relates to the field of brick making, in particular to a pressing method brick making process for building waste mud.
Background
A large amount of clay bricks are used as wall materials in the traditional construction industry, and the production of the clay bricks certainly damages farmlands, consumes farmland land resources and seriously damages ecological balance. Clay bricks are prohibited in all cities in the country in 2010, so that bricks made of clay raw materials instead of traditional clay raw materials must be found.
With the continuous development of the building industry, a large amount of waste slurry can be generated in the building construction process, including sand, bentonite and a large amount of water, the existing treatment mode is to load and transport the waste slurry on a tank handle spot, and thus, a plurality of problems can be generated: the amount of waste slurry generated in building construction is huge, the loading and outward transportation cost is high, and the efficiency is low; the slurry spills and leaks to pollute the environment in the transportation process; the mud is discarded at will and buried to cause greater pollution.
The inventor of the application finds that in the prior art, the construction waste slurry is subjected to mud-water separation treatment on a construction site, so that after the water content is lower than 60%, the main treatment mode is still landfill, the treatment cost is high, the occupied area of the construction site is large, the efficiency is low, and the construction progress is seriously influenced.
Disclosure of Invention
The embodiment of the invention provides a sintering method brick making process for building waste mud, which is used for replacing clay for making bricks, so that the waste mud treatment cost is reduced, and the waste mud is recycled to improve the economic value.
The embodiment of the invention provides a sintering method brick making process for building waste slurry, which comprises the following steps:
s100: coarsely filtering the collected building slurry, and discharging the building slurry into a sedimentation tank;
s200: removing supernatant liquor and floating matters after the waste slurry in the sedimentation tank is sedimentated;
s300: carrying out sand separation and sand washing treatment on the residual slurry, and discharging the slurry into a flocculation tank;
s400: adding a flocculating agent into the flocculation tank, quickly stirring until tiny solid particles in the slurry are coagulated into flocculent lumps with larger volume, standing, and removing supernatant;
s500: dehydrating the flocculated slurry to obtain a dehydrated mud cake with the water content of less than or equal to 35%;
s600: the materials are prepared according to the following material mass percentages:
60 to 70 percent of dehydrated mud cake
15 to 25 percent of coal gangue
10% -20% of shale;
s700: adding water into the ingredients and stirring, wherein the water adding amount is 8-10% of the total weight of the ingredients;
s800: sending the uniformly stirred ingredients to an aging tank for aging;
s900: crushing and weighing the ingredients, and then conveying the ingredients to a brick making machine for culture;
s1000: and baking the obtained brick in a baking cellar to obtain a finished brick.
In one possible embodiment, the construction mud comprises: sand, bentonite and building impurities, wherein the building impurities can be filtered and removed or float in supernatant liquor, and the water content of the building slurry is greater than or equal to 70%.
In a possible scheme, the mesh of the filter screen for performing coarse filtration in S100 is a square hole or a round hole with the length of 3 mm.
In a possible scheme, the flocculating agent in S400 comprises polyacrylamide (anions) and quicklime, and is added according to the ratio of 1-1.1g/L of polyacrylamide (anions) to 10g/L of quicklime.
In a possible scheme, the S500 specifically includes the following steps:
s310: conveying the flocculent agglomerate slurry to a belt filter press for gravity dehydration;
s320: the slurry after gravity dehydration is sent to a wedge-shaped section of a belt filter press for prepressing and dehydration;
s330: delivering the slurry subjected to prepressing and dehydration to a pressure dehydration area of a belt type filter press for filter pressing and dehydration;
s340: and (3) detecting the water content of the slurry subjected to filter pressing and dewatering, repeatedly executing the step S300 if the water content is more than 35% in the detection result, and obtaining a dewatered mud cake with the water content of less than or equal to 35% in the detection result.
In one possible embodiment, in the S600, the coal gangue and the shale are in the form of fine particles having a maximum diameter of less than or equal to 1 mm.
In one possible embodiment, the aging tank temperature is 10-30 ℃ and the aging time is 3-5 days.
In a possible solution, the step S1000 specifically includes the following steps:
s1100: the brick is delivered to a drying section of a roasting chamber for storage for 1 to 2 days at the temperature of 100-;
s1200: then the mixture is sent to a sintering section of a roasting chamber to be sintered for 48 hours at the temperature of 900-;
s1300: finally, the mixture is sent to a heat preservation section of a roasting chamber for heat preservation for 1 to 2 days, and the temperature is 60 to 80 ℃.
Based on the scheme, the sintering-method brick making process for the building waste slurry comprises the following steps: s100, roughly filtering the building slurry, removing insoluble building impurities and gravels with the particle size larger than 3mm, and discharging the building impurities and the gravels into a sedimentation tank; s200, standing for a period of time, and removing supernatant liquor and floating materials when mud in the mud pool is precipitated, wherein the floating materials possibly contain engine oil for construction machinery and are also removed; s300, carrying out sand separation and washing treatment on the residual slurry, separating sand and stone from soil in the slurry, removing sand and stone, greatly reducing the influence of sand and stone on brick making, and discharging the slurry into a flocculation tank; s400, adding a flocculating agent into a flocculation tank to promote free water separation in the slurry, quickly stirring to prevent the flocculating agent from coagulating into blocks, stirring until tiny solid particles in the slurry coagulate into flocculent blocks with larger volume, standing, and removing supernatant; s500, conveying the flocculated slurry to a belt filter press for gravity, prepressing and pressure dewatering, detecting the water content of the obtained slurry, repeatedly executing the step S500 if the water content is more than 35% as a detection result, and obtaining dewatered mud cakes with the water content of less than or equal to 35% if the water content is less than or equal to 35% as the detection result, wherein the water content is controlled to reduce the plastic deformation of brick culture; s600, mixing 60-70% of dewatered mud cakes, 15-25% of coal gangue and 10-20% of shale in percentage by mass, wherein the coal gangue and the shale are in the form of fine particles with the maximum diameter of less than or equal to 1mm, the influence of large-particle sand stones on manufacturing machinery can be reduced, and the fineness of brick culture can also be improved; s700, adding water into the ingredients and stirring, wherein the water adding amount is 8-10% of the total weight of the ingredients; s800, feeding the uniformly stirred ingredients to an aging tank for aging for 3-5 days, wherein the temperature of the aging tank is 10-30 ℃, and the raw materials are more conveniently molded after aging, so that the brick cultivation quality is improved; s900, smashing the ingredients, wherein the aged raw materials are difficult to be agglomerated together, making bricks after smashing, weighing, wherein the quantity of the raw materials required by a brick making machine for making bricks is certain, and the weighing is beneficial to the uniform standard of the made bricks, and then conveying the bricks to the brick making machine for making bricks; s1000, conveying the brick culture to a drying section of a roasting chamber for drying for 1-2 days, reducing the water content in the brick culture, sintering, and finally conveying to a heat preservation section for cooling to obtain a finished brick. By the sintering method brick making process, the building waste slurry is sintered into bricks, the waste is recycled, and the economic value is reproduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a block diagram of a process flow in an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the indicated orientations and positional relationships based on the drawings for convenience in describing and simplifying the description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
In the present invention, unless otherwise specifically stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication connection; either directly or indirectly through intervening media, either internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The technical solution of the present invention will be described in detail below with specific examples. The following specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments
Fig. 1 is a process flow diagram in an embodiment of the present invention, and as shown in fig. 1, the sintering method brick making process for building waste mud in the embodiment includes the following steps:
s100: coarsely filtering the collected building slurry, and discharging the building slurry into a sedimentation tank;
specifically, building waste slurry generated in the construction process is collected in the building construction process, and is sent to a filtering device for coarse filtration, gravels and other impurities with larger particles in the slurry are filtered, and the filtered waste slurry is discharged into a sedimentation tank;
s200: removing supernatant liquor and floating matters after the waste slurry in the sedimentation tank is sedimentated;
specifically, the slurry discharged into the sedimentation tank is separated into a supernatant layer, a lower slurry layer and a middle turbid layer after standing for a period of time, and the supernatant layer and floating materials are removed by a pump or other methods;
s300: carrying out sand separation and sand washing treatment on the residual slurry, and discharging the slurry into a flocculation tank;
specifically, pumping the lower slurry layer and the middle turbid layer into a sand separating and washing machine, washing with water, separating sand and soil in the slurry, and discharging the slurry without sand and stone into a flocculation tank;
s400: adding a flocculating agent into the flocculation tank, quickly stirring until tiny solid particles in the slurry are coagulated into flocculent lumps with larger volume, standing, and removing supernatant;
specifically, a flocculating agent is added into a flocculation tank and is rapidly stirred, so that the flocculating agent is prevented from being coagulated into blocks, the flocculation effect is reduced, a plurality of stirring machines can be used for stirring simultaneously, after the stirring is carried out for a period of time, the stirring is stopped, and after the stirring is carried out for a period of time, the water on the upper layer in the slurry is pumped out by a pump or other modes;
s500: dehydrating the flocculated slurry to obtain a dehydrated mud cake with the water content of less than or equal to 35%;
specifically, in this example, the slurry subjected to the flocculation treatment was pumped to a belt filter press, and dehydrated, and a dehydrated cake having a water content of 35% or less was obtained by detection.
S600: the materials are prepared according to the following material mass percentages:
60 to 70 percent of dehydrated mud cake
15 to 25 percent of coal gangue
10% -20% of shale; .
Specifically, in this embodiment, the blending system takes 65% of dewatered cake, 20% of coal gangue and 15% of shale by mass, and conveys the dewatered cake, the coal gangue and the shale to the stirring mechanism.
S700: adding water into the ingredients and stirring, wherein the water adding amount is 8-10% of the total weight of the ingredients;
specifically, in this example, the ingredients were stirred with water to homogenize the raw materials, and the amount of water added was 9% of the total mass.
S800: sending the uniformly stirred ingredients to an aging tank for aging;
s900: crushing and weighing the ingredients, and then conveying the ingredients to a brick making machine for culture;
specifically, in the embodiment, the aged ingredients are sent to a soil crusher to be crushed, then equal parts of the ingredients with the weight required by a brick making machine are weighed, and the equal parts of the ingredients are sent to the brick making machine to be made into bricks, so that brick culture is obtained;
s1000: and baking the obtained brick in a baking cellar to obtain a finished brick.
Specifically, the obtained bricks are stacked on a kiln car of a roasting kiln, the bricks are conveyed to the roasting kiln by the kiln car for firing, and defective bricks are removed from the fired bricks to obtain finished bricks.
According to the sintering-method brick making process for the building waste slurry, the collected building waste slurry is subjected to coarse filtration to remove large gravels and impurities in the slurry, the obtained slurry is sent to a sedimentation tank for sedimentation for a period of time, and then supernatant and floaters are removed; then, carrying out sand separation and washing treatment on the slurry to remove sand and stone in the slurry and reduce the influence of the sand and stone on the strength of the brick; flocculating the slurry with sand removed to condense water among slurry and soil particles into free water, and pumping out the water separated from the upper layer; pumping the residual slurry to a belt filter press for filter pressing and dehydration, detecting the water content, and ensuring that the water content of the obtained dehydrated sludge cake is less than or equal to 35%; then, mixing the dehydrated mud cake, the coal gangue and the shale according to the mass percentage; adding water and stirring to be uniform; then sending the uniformly stirred ingredients to an aging tank for aging for a period of time; and crushing the aged ingredients, weighing, then conveying to a brick making machine for making bricks, baking the obtained special bat in a baking kiln, and finally obtaining the finished product brick. By the sintering method brick making process of the building waste mud, the building waste mud can be made into brick making raw materials and finished bricks, and the problem that construction is influenced by building waste mud accumulation is effectively solved.
Further, in the present embodiment, the construction mud includes: sand, bentonite and building sundries, wherein the building sundries can be filtered and removed or float in supernatant liquor, and the water content of the building mud is more than or equal to 70 percent. The construction slurry is collected in the open air, construction sundries and some mechanical oil stains are inevitably mixed in the slurry, sundries with the diameter larger than the meshes of the filter screen can be filtered, and the oil stains can float on the surface of the sedimentation tank and can be removed; water is continuously added in the building construction process, so that the water content of the waste slurry is relatively high, and the water content is larger than or equal to 70% through detection.
Further, the mesh of the filter screen for performing the coarse filtration in S100 is a square hole or a circular hole having a length of 3 mm. The coarse filtration of the building slurry is realized by arranging the filter screen, the meshes of the filter screen are square or circular, the aperture is 3mm long, the influence of too large filter holes on brick making is prevented, and the filter efficiency is influenced by too small filter holes.
Further, the flocculant in S200 comprises polyacrylamide (anion) and quicklime, and is added according to the ratio of 1-1.1g/L of polyacrylamide (anion) to 10g/L of quicklime. Comparing solid-liquid separation effects of various chemical flocculants, finding that the best separation effect can be obtained by selecting polyacrylamide (anions) and quicklime for matching use, wherein the best addition amount of the selected polyacrylamide (anions) is 1-1.1g/L, and the best addition amount of the quicklime is 10 g/L; in this example, a flocculant was added to the slurry after the sand removal in a ratio of 1.05g/L of polyacrylamide (anion) to 10g/L of quicklime, and the mixture was rapidly stirred.
Further, step S300 specifically includes the following steps:
s310: conveying the flocculent agglomerate slurry to a belt filter press for gravity dehydration;
s320: the slurry after gravity dehydration is sent to a wedge-shaped section of a belt filter press for prepressing and dehydration;
s330: delivering the slurry subjected to prepressing and dehydration to a pressure dehydration area of a belt type filter press for filter pressing and dehydration;
s340: and (3) detecting the water content of the slurry subjected to filter pressing and dewatering, repeating the step S300 if the water content is more than 35% in the detection result, and obtaining a dewatered mud cake with the water content of less than or equal to 35% in the detection result.
Specifically, in the present embodiment, step S310, step S320, and step S330 are all completed in a belt filter press, which is divided into a gravity dewatering section, a wedge-shaped pre-pressing section, and a filter-pressing dewatering section; after supernatant liquor of the flocculated slurry is removed, pumping the flocculated slurry to a mesh belt of a belt filter press, allowing free water between the slurries to flow out under the action of self weight, slightly extruding the slurry at a wedge-shaped prepressing section to remove free water on the surface, almost completely losing the fluidity, meeting the conditions of filter pressing and dewatering, and repeatedly extruding the slurry by reasonably arranging compression rollers; step S340, detecting the mud subjected to filter pressing dehydration, and carrying out filter pressing dehydration on the mud with the water content of more than 35% again until a dehydrated mud cake with the water content of less than or equal to 35% is obtained.
Further, in S600, the coal gangue and the shale are both in the form of fine particles with the maximum diameter less than or equal to 1 mm. Specifically, before the coal gangue and the shale are added into the batching equipment, the coal gangue and the shale are ground, and the coal gangue and the shale are respectively filtered by using filter screens with the diameters of less than or equal to 1mm, so that the maximum diameters of the added coal gangue and shale are less than or equal to 1 mm.
Furthermore, the temperature of the aging pool is 10-30 ℃, and the aging time is 3-5 days. In this example, the aging temperature was 20 ℃ and the aging time was 4 days; specifically, the aging tank can be closed, the tank is opened during feeding, and then closed after feeding, a feeding device is arranged below the aging tank, a temperature detector is arranged in the aging tank, and the temperature of the aging tank can be adjusted through a heating device according to the temperature detector.
Further, the step S1000 specifically includes the following steps:
s1100: the bricks are delivered to a drying section of a roasting chamber for storage for 1 to 2 days at the temperature of between 100 and 120 ℃;
s1200: then the mixture is sent to a sintering section of a roasting chamber to be sintered for 48 hours at the temperature of 900-1000 ℃;
s1300: finally, the mixture is sent to a heat preservation section of a roasting chamber for heat preservation for 1 to 2 days, and the temperature is 60 to 80 ℃.
Specifically, in the present embodiment, the brick is sent to a drying section of a roasting kiln to be dried at a temperature of 110 ℃ for 2 days, then sent to a sintering section to be fired at a temperature of 950 ℃ for 48 hours, and finally kept at a temperature of 70 ℃ for 2 days in a heat preservation section; the temperature of each temperature section of the roasting kiln can be adjusted by the number of the heating wires or the power supply strength.
In the present invention, unless otherwise explicitly specified or limited, the first feature "on" or "under" the second feature may be directly contacting the first feature and the second feature or indirectly contacting the first feature and the second feature through an intermediate.
Also, a first feature "on," "above," and "over" a second feature may mean that the first feature is directly above or obliquely above the second feature, or that only the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lower level than the second feature.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example" or "some examples," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. A sintering method brick making process of building waste slurry is characterized by comprising the following steps:
s100: coarsely filtering the collected building slurry, and discharging the building slurry into a sedimentation tank;
s200: removing supernatant liquor and floating matters after the waste slurry in the sedimentation tank is sedimentated;
s300: carrying out sand separation and washing treatment on the residual slurry, and discharging the residual slurry into a flocculation tank;
s400: adding a flocculating agent into the flocculation tank, quickly stirring until tiny solid particles in the slurry are coagulated into flocculent lumps with larger volume, standing, and removing supernatant;
s500: dehydrating the flocculated slurry to obtain a dehydrated mud cake with the water content of less than or equal to 35%;
s600: the materials are prepared according to the following material mass percentages:
60 to 70 percent of dehydrated mud cake
15 to 25 percent of coal gangue
10% -20% of shale;
s700: adding water into the ingredients and stirring, wherein the water adding amount is 8-10% of the total weight of the ingredients;
s800: sending the uniformly stirred ingredients to an aging tank for aging;
s900: crushing and weighing the ingredients, and then conveying the ingredients to a brick making machine for culture;
s1000: and baking the obtained brick in a baking cellar to obtain a finished brick.
2. The process of claim 1, wherein the construction mud comprises: sand, bentonite and building impurities, wherein the building impurities can be filtered and removed or float in supernatant liquor, and the water content of the building slurry is greater than or equal to 70%.
3. The process according to claim 1, characterized in that: and the meshes of the filter screen completing the coarse filtration in the S100 are square holes or round holes with the length of 3 mm.
4. The process according to claim 1, characterized in that: the flocculating agent in the S400 comprises polyacrylamide (anions) and quicklime, and is added according to the proportion of 1-1.1g/L of polyacrylamide (anions) to 10g/L of quicklime.
5. The process according to claim 1, characterized in that: the step S500 specifically includes the following steps:
s310: conveying the flocculent agglomerate slurry to a belt filter press for gravity dehydration;
s320: the slurry after gravity dehydration is sent to a wedge-shaped section of a belt filter press for prepressing and dehydration;
s330: delivering the slurry subjected to prepressing and dehydration to a pressure dehydration area of a belt type filter press for filter pressing and dehydration;
s340: and (3) detecting the water content of the slurry subjected to filter pressing and dewatering, repeatedly executing the step S500 if the water content is more than 35% in the detection result, and obtaining a dewatered mud cake with the water content of less than or equal to 35% in the detection result.
6. The process according to claim 1, characterized in that: in the S600, the coal gangue and the shale are both in the form of fine particles with the maximum diameter less than or equal to 1 mm.
7. The process according to claim 1, characterized in that: the temperature of the aging pool is 10-30 ℃, and the aging time is 3-5 days.
8. The process according to claim 1, characterized in that: the step S1000 specifically includes the following steps:
s1100: the brick is delivered to a drying section of a roasting chamber for storage for 1 to 2 days at the temperature of 100-;
s1200: then the mixture is sent to a sintering section of a roasting chamber to be sintered for 48 hours at the temperature of 900-;
s1300: finally, the mixture is sent to a heat preservation section of a roasting chamber for heat preservation for 1 to 2 days, and the temperature is 60 to 80 ℃.
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| CN201911189380.7A CN111004012A (en) | 2019-11-28 | 2019-11-28 | Sintering method brick making process for building waste slurry |
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| CN201911189380.7A CN111004012A (en) | 2019-11-28 | 2019-11-28 | Sintering method brick making process for building waste slurry |
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| CN111533428A (en) * | 2020-04-29 | 2020-08-14 | 杭州天和建设集团有限公司 | Construction method for curing building slurry |
| CN111777406A (en) * | 2020-06-16 | 2020-10-16 | 日昌升建筑新材料设计研究院有限公司 | Process for preparing sintered heat-insulation building blocks from sand washing mud |
| CN111807813A (en) * | 2020-06-16 | 2020-10-23 | 日昌升建筑新材料设计研究院有限公司 | Sand washing mud brick making process |
| CN111976007A (en) * | 2020-07-23 | 2020-11-24 | 浙江方远新材料股份有限公司 | Control system and control method for slurry recovery |
| CN113061005A (en) * | 2021-03-18 | 2021-07-02 | 中国石油大学(华东) | Oil field water-based drilling waste mud recycling method |
| CN113149301A (en) * | 2021-04-29 | 2021-07-23 | 广东众城生态环境发展有限公司 | Sewage treatment method |
| CN113336406A (en) * | 2021-06-03 | 2021-09-03 | 中铁海峡(厦门)环保技术有限公司 | Slurry filtering treatment process for building construction |
| CN114804405A (en) * | 2022-03-30 | 2022-07-29 | 华新水泥股份有限公司 | Method for controlling residual amount of flocculating agent in washing machine-made sand |
| CN115490533A (en) * | 2022-10-17 | 2022-12-20 | 广东万山环境科技有限公司 | Brick making process by solid waste and biomass carbon sintering method |
| CN115849835A (en) * | 2023-01-03 | 2023-03-28 | 光大绿色环保管理（深圳）有限公司 | Method for preparing cement-stabilized macadam material from biomass incineration ash |
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| CN111533428A (en) * | 2020-04-29 | 2020-08-14 | 杭州天和建设集团有限公司 | Construction method for curing building slurry |
| CN111777406A (en) * | 2020-06-16 | 2020-10-16 | 日昌升建筑新材料设计研究院有限公司 | Process for preparing sintered heat-insulation building blocks from sand washing mud |
| CN111807813A (en) * | 2020-06-16 | 2020-10-23 | 日昌升建筑新材料设计研究院有限公司 | Sand washing mud brick making process |
| CN111976007A (en) * | 2020-07-23 | 2020-11-24 | 浙江方远新材料股份有限公司 | Control system and control method for slurry recovery |
| CN113061005A (en) * | 2021-03-18 | 2021-07-02 | 中国石油大学(华东) | Oil field water-based drilling waste mud recycling method |
| CN113149301A (en) * | 2021-04-29 | 2021-07-23 | 广东众城生态环境发展有限公司 | Sewage treatment method |
| CN113336406A (en) * | 2021-06-03 | 2021-09-03 | 中铁海峡(厦门)环保技术有限公司 | Slurry filtering treatment process for building construction |
| CN114804405A (en) * | 2022-03-30 | 2022-07-29 | 华新水泥股份有限公司 | Method for controlling residual amount of flocculating agent in washing machine-made sand |
| CN115490533A (en) * | 2022-10-17 | 2022-12-20 | 广东万山环境科技有限公司 | Brick making process by solid waste and biomass carbon sintering method |
| CN115849835A (en) * | 2023-01-03 | 2023-03-28 | 光大绿色环保管理（深圳）有限公司 | Method for preparing cement-stabilized macadam material from biomass incineration ash |
| CN115849835B (en) * | 2023-01-03 | 2023-11-14 | 光大绿色环保管理（深圳）有限公司 | Method for preparing cement stabilized macadam material by using biomass incineration ash |
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